Petra Aminoff began studying the flute at the Helsinki Conservatory and also played early music on the recorder. Having taken up the traverso at age 22, she gave up the modern concert flute, completed a recorder diploma and went to the Netherlands to study the traverso (1986-1987). She graduated from the Sibelius Academy in 1991 and was appointed a Lecturer of Recorder at Espoo Music Institute. She has been teaching ever since (at the Helsinki Conservatory and the Sibelius Academy) while performing early music with various orchestras (the Finnish Baroque Orchestra, the Helsinki Baroque Orchestra) and ensembles (Battalia, Opus X, the folk Baroque ensemble SAMA). Her particular focus is on developing her traverso playing and extending the repertoire of her instrument to Classical and contemporary music. She owns a variety of flutes from the Renaissance to the modern, with tunings ranging from 392 Hz to 442 Hz.